Rename _t struct types in audio_coding.

_t names are reserved in POSIX.

R=henrik.lundin@webrtc.org
BUG=162

Review URL: https://webrtc-codereview.appspot.com/34509004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7933 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/frame_classify.c b/webrtc/modules/audio_coding/codecs/ilbc/frame_classify.c
index c2c6f75..c93cdd4 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/frame_classify.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/frame_classify.c
@@ -25,7 +25,7 @@
 
 int16_t WebRtcIlbcfix_FrameClassify(
     /* (o) Index to the max-energy sub frame */
-    iLBC_Enc_Inst_t *iLBCenc_inst,
+    IlbcEncoder *iLBCenc_inst,
     /* (i/o) the encoder state structure */
     int16_t *residualFIX /* (i) lpc residual signal */
                                                 ){